I'm told the JT Flex is pretty good for putting eyeglasses under. Although I don't know any mask that's designed specifically to have glasses under them other than the "mounts" available that you can put the loose glasses lenses in.

If you find some holler at me, I'd like to know too since I've started wearing my glasses more and probably need to play with my glasses on now. Although I'm assuming the best way is probably getting something that has the space like the JT Flex and if it doesn't fit just cutting the foam out a bit or replacing the foam for for better fitment with glasses.

Same here, I wear contacts. But before then, I used a pair of ESS goggles, the one with the fan built in, they fit over my glasses, stopped the fogging cause of the fan, but you get to listen to the hum of a fan running all day.

Provided your glasses aren't too tall, they will fit under a JT Spectra/Flex 7. I'd personally recommend looking at some of the other options here, as my glasses fog BADLY beneath mine, but in a pinch they WILL fit.

revisions with the RX inserts are amazing. Plastic Soldier Airsoft sells them here in calgary.

Yeah, the revisions are nice, my RX inserts normally hit my eyelashes (you will see some other people also complain about this as everyone is different), but for the revision, my eyelashes don't brush against it while still being very low profile goggles... (Way thinner than paintball goggles, and obviously thinner than any OTG goggles)

I have not tried ESS inserts so no idea on that ye, but should be just as good.

Since you're close to the GTA, you could also go to TAC 11, they will probably have various goggles for you to try on.

Fan may be recommended imo because if the goggles don't fog, your rx insert lenses might...